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Ascending/descending synchronous communication method for radio base station control node and cascade far-end node thereof

A technology for controlling nodes and remote nodes, which is applied in wireless communication, communication between multiple stations, synchronization devices, etc. It can solve the problems of cost increase, RRU needs to increase buffer space, etc., to increase distance and reduce cost Effect

Active Publication Date: 2011-10-26
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to two consequences: 1) RRU needs to increase the cache space, which leads to an increase in cost; 2) When the cache space cannot be increased, it limits the distance that RRU can extend

Method used

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  • Ascending/descending synchronous communication method for radio base station control node and cascade far-end node thereof
  • Ascending/descending synchronous communication method for radio base station control node and cascade far-end node thereof
  • Ascending/descending synchronous communication method for radio base station control node and cascade far-end node thereof

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Experimental program
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Embodiment Construction

[0020] Below in conjunction with accompanying drawing, technical essence of the present invention is described in detail as follows by embodiment:

[0021] like Figure 5 Shown: For the downlink, the chip numbers of each RRU included in the same Group are no longer the same, such as Group 0 Contains RRUs (n) (n=0~N-2) chip M-K and RRU (N-1)the chip 0 , here chip M-K is RRU (n) For the data of the previous frame, different n corresponds to different K values. That is RRU (N-1) the chip 0 is from Group 0 started, while the RRU (n) the chip 0 is from Group K The beginning, the Group K Contains RRUs (N-1) the chip 0 and RRU (n) the chip K .

[0022] For the downlink, the specific steps implemented on the BBU side are as follows:

[0023] In the first step, the BBU and the RRU agree that the amount of data transmitted within the T4 time interval is acceptable for the RRU buffer space. For example, T4 can contain data from 1 to 8 chips;

[0024] In the second ste...

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Abstract

The invention relates to mobile communication field, especially relating to method for synchronous communication that control node of a base station cascading with multiple remote node under TDD. Transmission time of service data of every level RRU is configurable at BBU side; the BBU separately notifies the configured transmission time to RRU of every level and transmits the service data of RRUof every level at set transmission time; RRU of every level receives service data of RRU of present level in set time advance corresponding to Uu port. RRu cached data quantity is controlled in a reasonable range, cache space is not needed to add, thereby cost is reduced; distance is prolonged for RRU, the invention is more conveniently used.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method in which a control node of a base station of a time division duplex (TDD) system cascades a plurality of remote nodes for synchronous communication. Background technique [0002] The structure of a typical cellular communication system is as follows figure 1 As shown, the user equipment (UE) communicates with the system side equipment through the propagation of wireless signals on the air interface. The system side equipment includes a base station (Node B), a radio network controller (RNC) and a core network equipment (CN), wherein the RNC and the Node B form a radio network subsystem (RNS). [0003] The Node B can be divided into a digital processing part or a baseband processing part (hereinafter referred to as RRU) and a radio frequency processing part (hereinafter referred to as RRU). According to the traditional method, Node B is designed in one piece, that is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00H04B7/26
Inventor 王志刚许俊文
Owner ZTE CORP
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